Cisco ASA DHCPv6 Relay DoS (cisco-sa-20151021-asa-dhcp1)

medium Nessus Plugin ID 93528

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its version and configuration, the remote Cisco Adaptive Security Appliance (ASA) device is affected by a denial of service vulnerability in the DHCPv6 relay feature due to improper validation of DHCPv6 packets. An unauthenticated, remote attacker can exploit this, via specially crafted DHCPv6 packets, to cause the device to reload.

Solution

Apply the relevant patch referenced in Cisco bug IDs CSCus56252 and CSCus57142. Alternatively, disable the DHCPv6 relay feature.

See Also

http://www.nessus.org/u?9cad6d0f

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCus56252

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCus57142

Plugin Details

Severity: Medium

ID: 93528

File Name: cisco-sa-20151021-asa-dhcp1.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 9/15/2016

Updated: 11/14/2019

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:adaptive_security_appliance_software

Required KB Items: Host/Cisco/ASA, Host/Cisco/ASA/model

Exploit Ease: No known exploits are available

Patch Publication Date: 10/21/2015

Vulnerability Publication Date: 10/21/2015

Reference Information

CVE: CVE-2015-6324

BID: 77257